修复

src/views/index.vue

@@ -38,6 +38,7 @@
             @change="el_select"
             placeholder="请选择"
             popper-class="menu_select"
+            filterable
           >
             <el-option
               v-for="(item, index) in options"
@@ -151,6 +152,7 @@ export default {
     //下拉列表api请求
     options_api() {
       api.options_api().then((requset) => {
+         this.options=[]
         // console.log(requset)
         var list = requset.data;
         for (let i in list) {